Milling cutter for processing aluminum nitride ceramic green body structural parts

Abstract

The invention provides a milling cutter for processing aluminum nitride ceramic green body structural parts, which includes a handle and a cutter body formed at one end of the handle, and the cutter body of the milling cutter for processing structural parts includes: at least two first cutting edges and at least two second cutting edges, each of the first cutting edge and the second cutting edge is a left-handed arc-shaped cutting edge formed by helically extending the handle rotation axis as the axis, the first cutting edge and the second cutting edge are arranged at intervals, and a powder discharge groove recessed toward the handle rotation axis is formed between the adjacent first cutting edges and second cutting edges; with the rotation axis of the handle as the axis, the two symmetrically arranged first cutting edges The distance between the sharp corners of the blades is greater than the distance between the sharp corners of the two symmetrically arranged second cutting edges. Therefore, the overall strength of the blade is guaranteed, and it is not easy to be damaged during the cutting process, resulting in metal residues in the material, thereby ensuring the quality of the product after sintering, and reducing dust on the production site by setting a powder discharge groove.

Description

technical field [0001] The invention belongs to the technical field of processing ceramic structural parts, and in particular relates to a milling cutter for processing aluminum nitride ceramic green body structural parts. Background technique [0002] The ceramic structural parts under the prior art, especially the milling cutters used in the processing of aluminum nitride ceramic structural parts, are made of high-speed tool steel and hard alloy, and in order to further improve the heat resistance and wear resistance of the milling cutter The performance and the hardness of the milling cutter itself will be coated on the surface of the milling cutter base. [0003] For example, in the existing equipment, the commonly used ones in ceramic processing include right-handed helical tooth edge milling cutters and straight edge milling cutters. During the energy-absorbing dry cutting process, the right-handed helical toothed milling cutter rotates counterclockwise, and its blade...

AI Technical Summary

Problems solved by technology

During the energy-absorbing dry cutting process, the right-handed helical tooth-edge milling cutter rotates counterclockwise, and its blade contacts the edge position of the green structural part from bottom to top, and as the milling cutter rotates and moves in the milling direction, its right-handed The helical blade generates an upward cutting force on the edge of the structural part, so under the action of the cutting force, cutting chipping is likely to occur at the edge of the structural part, and because of the cutting chipping, it also indirectly causes more damage to the cutting edge. Large loss, resulting in a greater impact on the sharpness of the blade, which in turn makes the finished product very prone to cracks or delamination of the finished material due to excessive force

Even, part of the metal body produced by the damage of the blade remains in the ceramic material before sintering, thereby polluting the green body formed after sintering

[0004] On the other hand, during the machining process, the blades of the helical toothed edge and the straight edge milling cutter have a single toothed edge structure, which will generate a large amount of rising dust when cutting with the green body, which will have varying degrees of impact on the site environment and construction safety.

[0005] In view of this, the existing technology should be improved to solve the problem of fast wear and short service life of the right-handed helical tooth edge and straight edge milling cutter in the processing technology of ceramic structural parts, and the difficulty in guaranteeing the processing quality of aluminum nitride ceramic structural parts. technical problem

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